<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Validate
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Barcode.php 16223 2009-06-21 20:04:53Z thomas $
 */

/**
 * @see Zend_Validate_Abstract
 */
require_once 'Zend/Validate/Abstract.php';

/**
 * @category   Zend
 * @package    Zend_Validate
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Validate_Barcode extends Zend_Validate_Abstract
{
	/**
	 * Barcode validator
	 *
	 * @var Zend_Validate_Abstract
	 */
	protected $_barcodeValidator;

	/**
	 * Generates the standard validator object
	 *
	 * @param  string $barcodeType - Barcode validator to use
	 * @return void
	 * @throws Zend_Validate_Exception
	 */
	public function __construct($barcodeType)
	{
		$this->setType($barcodeType);
	}

	/**
	 * Sets a new barcode validator
	 *
	 * @param  string $barcodeType - Barcode validator to use
	 * @return void
	 * @throws Zend_Validate_Exception
	 */
	public function setType($barcodeType)
	{
		switch (strtolower($barcodeType)) {
			case 'upc':
			case 'upc-a':
				require_once 'Zend/Validate/Barcode/UpcA.php';
				$class = 'Zend_Validate_Barcode_UpcA';
				break;
			case 'ean13':
			case 'ean-13':
				require_once 'Zend/Validate/Barcode/Ean13.php';
				$class = 'Zend_Validate_Barcode_Ean13';
				break;
			default:
				require_once 'Zend/Validate/Exception.php';
				throw new Zend_Validate_Exception("Barcode type '$barcodeType' is not supported'");
				break;
		}

		$this->_barcodeValidator = new $class;
	}

	/**
	 * Defined by Zend_Validate_Interface
	 *
	 * Returns true if and only if $value contains a valid barcode
	 *
	 * @param  string $value
	 * @return boolean
	 */
	public function isValid($value)
	{
		return call_user_func(array($this->_barcodeValidator, 'isValid'), $value);
	}
}
